Kinetic data for the first-order ring opening of the dihydro-intermediates, formed on the photocyclisation of several styrylnaphthalene analogues, are presented and some aspects of their electronic spectra are discussed. The photocyclodehydrogenation of 1,2-di-(2-naphthyl)ethylene to benzo[g,h,i]perylene proceeded via dibenzo[c,g]-phenanthrene. Photocyclodehydrogenation of 2-methyl-1-(2,4,6-trimet
给出了在几种
苯乙烯基
萘类似物的光环化反应中形成的二氢中间体一阶开环的动力学数据,并讨论了其电子光谱的某些方面。1,2-二- (2-
萘基)
乙烯与苯并[所述photocyclodehydrogenation克,ħ,我]
苝进行经由二苯并[ c ^,克] -
菲。2-甲基-1-(
2,4,6-三甲基苯乙烯基)
萘,2-甲基-
1-苯乙烯基萘,1-(
2,4,6-三甲基苯乙烯基)
萘和1-(
2,6-二氯苯乙烯基)的光环脱氢
萘产生预期的衍
生物。将1-
溴-2-
苯乙烯基
萘和2-(
2,4,6-三甲基苯乙烯基)
萘光环化为苯并[ c]
菲和2,4-二甲基苯并[ c ]
菲。没有观察到取代基的迁移。电子对这些
苯乙烯基
萘的影响与其光
化学行为有关。讨论了
苯乙烯基
萘的uv和1 H nmr光谱。